Did the majority of Trump general election voters vote for Reagan in 1980 and 1984?

[SingingAnalyst]

Of those who were old enough to vote in 1984, I'd say about 70% or more who voted in 1984, voted for Reagan.

Per CNN, Trump won 53% of voters 50 and older. Reagan's 1984 vote had no age gradient to speak of, with voters younger than 50 (most of whom were still alive to vote in 2016) voting 58-41 Reagan over Mondale.

So of all who voted both years, even if 35% switched sides between 1984 and 2016, we have the following:

Mondale - Clinton: 25%
Mondale - Trump: 15%
Reagan - Clinton: 20%
Reagan - Trump: 38%
other: 2%